89 



Paragraph 



Capillarity, correction for : 174 



Cards, barometer correction. Form No. 1059-Metl 42, 170 



Care and preservation of barometers 108 



Carrying cases, leather 146 



Change in location of barometer 148 



when made 186 



or substitution of barometers 116, 185, 186 



Cistern, adjustment of 97 



• filtering mercury into 140 



fixed and adjustable 18 



glass part washed 135 



of barometer 9 



not to be strained 111, 114 



frequently cleaned 117 



screws of, tightened regularly 136, 141 



straining of 16, 111, 114 



Tuch, instructions for cleaning 143 



pattern described 17 



Cleaning around ivory point 134 



barometers, instructions for 123-144, 187 



pens for barograph 159 



Clocks for barographs, regulated and wound 157 



Comparative barometer readings 1 18-122, 183 



object of 119 



recorded on Form No. 1027-Metl 166 



Comparative barometer readings when levels can not be run 166 



readings, interval for, after, cleaning 121,142 



order for making, on removal of office 166 



Correction of barometer readings, example 171 



for capacity 18, 24 



density of mercury 44 



error of barograph 160 



imperfect vacuum 41, 174 



scale errors, capillarity, etc 41, 174 



temperature 41, 43, 174 



tables for 195 



provisional removal 182, 198 



variable removal 174, 182a 



Determination of heights by aneroids 104, 105, 107 



tables for 199 



Diagonal barometers 62 



Dial barometer 63 



Elevation determined by competent person 162, 165 



of a station defined 161, 174 



barometer above sea level, determined promptly 178 



actual 174 



station 174 



to be given in feet and decimals 162 



Empty barometers, shipment of 151 



Engineer to be informed concerning levels 165 



Error of barograph clocks checked 158 



barometers as shown by comparative readings 116 



Exposure of barographs 89-152, 176 



barometers 8^152, 176 



Extra barometers, cisterns, lowered before comparative readings 177 



screwed up 177 



Field notes, copy of, furnished 165 



"Fixed point" to be established 163 



Foreman's barograph 70 



Forms for barographs changed 156 



trimmed 156 



refigured for barographs at elevated stations 155 



Form No. 1001-Metl _______ _ 171 



1027-Metl _ _ 183 



1058-Metl _ __ _ _ 165 



1059-Metl 42. 170 



